Coffee-machine.



G. NELSON.

COFFEE MACHINE.

APPLICATION FILED APR.3, 1908.

4 h w x 1 n ven tor Attorneys.

CHARLES NELSON, F NEW YORK, N. Y., ASSIGNOJR. TO THE FIRM OF S. STERNAU&

COMPANY, OF NEW YORK, N. Y., A COPARTNERSHI]? COMPOSED 0F SIGMUNID STER-nnu nnn Lionel. srnnssnuncnn.

COFFEE-MACHINE.

treason.

Specification of Letters Patent.

Patented Dec. 29, 191%..

To all whom it may concern:

Be it known that 1, CHARLES Nnnson, a subject of the King of Sweden, anda resident of the borough of Brooklyn, county of lhlings, city and btateof New York, have I invented a new and useful Improvement in into thereceptacle in the event that an overflow is caused by too vigorousaction of the fountain. These and other objects will appear from thefollowing specification and accompanying drawing, considered together orseparately.

Figure 1 is a view, partly in section,'of' a cofi'ee-pot embodying theinvention. Fig. 2

is-a section on the line 2-2 of Fig. '1 looking upward. Fig. 3 is asimilar view of a modification; and Fig. 4 is a plan view, on a reducedscale, of the cover annulus.

In all of the views like parts are designated by thesame referencecharacters.

The invention is illustrated as embodied in the forr'n'of a coffee-pot,but it is to be understood that any other form of colfee machine orsimilar device may be used in connection with the invention.

The structure illustrated comprises a receptacle 1 for containing waterand the infusion of coffee, or of whatever material is used forthatpurpose. In the receptacle 1 is a fountain 2, having an outlet tube 3.The fountain 2 is shown as extending into a heating chamber 4:, providedwith a plate 5, which serves as a foot for the coffee-pot,

, also a means for conducting heat to the heating chamber 4, and alsofor insulating the bottom of the receptacle 1 to keep its contents frombeing directly acted upon by the heat. The fountain is shown as providedwith a plurality of inlet passages 6, grouped about a centrally locatedoutlet passage 7 A valve prevents the passage of the liquid in thereverse direction, and insures that it shall pass downwardly through theinlet passages 6, and upwardly through the ou-tletpassage 7. Theparticular form of fountain chosen for illustration forms the subjectmatter of an application for patent filed by me on the 30th day ofOctober, 1907, Serial No. 399,804, (Case J). Any other form of fountainmay be used, with or without the heating chamber 4;.

The outlet tube 3 of the fountain passes through and is connected to andsupports a screen 8 or receptacle for holding the coflee. Thisreceptacle is of the cylindrical form shown, and has perforated sidewalls and an imperforate bottom. On the upper edge of the side walls isan outwardly extending flange 9, having a seat 10 for the support of theannulus '11. The flange 9, when the fountain is in place is about on thesame horizontal plane as the flange 12, on the upper edgeof thereceptacle 1. This flange 12 extends outward, and connects at its outeredge with a vertical flange 13, shown with a beaded upper edge. Theflange 9, when the outlet tube 3 is in the vertical posiinner wall ofthe screen 8. The flange 15 has an enlargement 16 which rests upon theseat 10. The flange, together with the enlargement 16, is crimpled orcorrugated forming passages 17, which serve as a means of communicationbetween the interior of the receptacle '8 and the flange 9. The portionof the annulus above the enlargement 16 extends inwardly, forming anincline 1.8. On the inner extremity of the annulus is a depending flange19 connected to .the inclined portion'l8 by a short horizontal portion20(see Fig. 4). Within the opening of the annulus is supported a glass cap21. This glass cap has a central recess 22 arranged to lie above theopen outer end of the outlet tube 3. The cap 21 is providedwith ahorizontal flange 23 and a vertical flange 24. The flange 23 is adaptedto l-est. upon the horizontal portion 20 of the annulus 11, while thevertical flange 2a is adapted to en .tion, serves as one wall of anannular pasthe flange 19. By partly twisting the cap within the annulus,the ears may be caused to engage with the lower edge of the flange 19.

Fig. 3 shows-a modified embodiment of the invention wherein thecorrugations and passages 17 are formed in the sides of the screen 8. Inthis modification the flange 10 is made integral with the screen and notseparate therefrom; as illustrated in Figs. 1

and 2.

The coffee orother material of which the infusion is to be made isplaced within the screen 8, and water is placed within the receptacle 1.Heat being applied to the bottom of the fountain, the liquid will bedrawn from thesreceptacle and discharged through the orifice of thefountain against the center of the cap 21,1nto the recess 22, and willbe discharged downwardly upon the contents .of the screen, and percolatethrough such contents and escape throughperforations in the screen.Should the founta n act with greater vigor than normal, and discharge agreater amount of liquid through the orifice of the discharge tube 3than can percolate through the contents of the screen 8, and theperforations in the latter, the surplus liquid will escape through thejoint between the screen 8, seat 10 and the flange 15, and will bedischarged over the flange 9 and enter the receptacle through thepassage .14. This Will 106C111 without any possibilityof solid coflee orcofiiee-grounds being carried into the receptacle, as the passages 17are not large enough to allow this to happen. The flange 12 issufficiently high so that the liquid discharged over the head 9 cannotescape outside of the receptacle but will be kept within thereceptacle 1. By lifting out the screen 8, the fountain will come outwith it, leaving the inside of the receptacle 1 entirely unobstructedand free for cleanm In accordance with the provisions of the .patentstatutes, I have described the prinby forming an annular outlet passagebetween the annulus and the screen; and a cap lying within the annulusand forming a close joint therewith.

2'. A cofli'ee machine having a receptacle; a screen, having inclosingwalls, within the receptacle; a cover for the screen, one of thecontactingsurfaces of the cover and the screen being formed ofcorrugations to provide a plurality of passages between the interior andexterior of the screen.

3. A coflee machine having a receptacle; a screen, having inclosingwalls, within'the receptacle; and a cover for the screen, said coverhaving a depending transversely corrugated flange forming a plurality ofoutlet passages from the screen. v

This specification signed and witnessed this 31st" day of March, 1908.

CHARLES NELSON- Witnesses:

LEONARD H. DYER, J'onn" L. Lo'rsoH;

